Optimal creation of entanglement using a two-qubit gate
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We consider a general unitary operator acting on two qubits in a product state. We find the conditions such that the state of the qubits after the action is as entangled as possible. We also consider the possibility of using ancilla qubits to increase the entanglement.
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The time complexity of tensor-network simulation scales exponentially with the treewidth of the circuit graph.
“The time complexity scales exponentially with the treewidth of the circuit graph [28].”
From Validating quantum computers using randomized model circuits (2019) · cites this paper as [28]
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Validating quantum computers using randomized model circuits
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- Authors
- Kraus, B., & Cirac, J. I.
- Affiliations
- Universität Innsbruck (AT)
- Venue
- Physical Review A
- Publisher
- American Physical Society (APS)
- Published
- 2001-05-17
- Volume
- 63
- Issue
- 6
- ISSN
- 0556-2791 (ISSN-L)
- 1050-2947
- 1094-1622
- OpenAlex
- W2029289973
- Cited by
- 432
- References
- 18
- Citations by year
- 2026: 23 · 2025: 29 · 2024: 25 · 2023: 25 · 2022: 22 · 2021: 19 · 2020: 19 · 2019: 18 · 2018: 9 · 2017: 8 · 2016: 11 · 2015: 16 · 2014: 12 · 2013: 18 · 2012: 7
- FWCI
- 20.85
- Type
- journal article
- Language
- en
- Open access
- green
- arxiv.org
- Locations
- Physical Review A (publishedVersion)
- arXiv (Cornell University) (submittedVersion)
- CERN Document Server (European Organization for Nuclear Research) (submittedVersion)
- mediaTUM – the media and publications repository of the Technical University Munich (Technical University Munich) (submittedVersion)
- arXiv (Cornell University)
- Topics
- Physical Sciences › Computer Science › Artificial Intelligence › Quantum Information and Cryptography
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Quantum Mechanics and Applications
- Physical Sciences › Computer Science › Artificial Intelligence › Quantum Computing Algorithms and Architecture
- Keywords
- entanglement generation, two-qubit gates, product states, unitary operators, ancilla qubits
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